Sky & Fog

Fog

Custom fog in Godot never quite matches the horizon. Distant geometry fades toward a colour you picked, the sky behind it is a different colour, and the seam gives the whole shot away.

Fog fixes that. It tints distance toward your actual sky, per view direction, so a mountain ten kilometres out dissolves into the clouds that are genuinely behind it. Point it at any Godot sky — including a physically simulated one — and it follows along automatically. There’s nothing to assign and nothing to keep in sync.

Like Lens, it runs on the Mobile renderer.

What you control:

Density and how far fog can take a surface toward fully hidden.
Aerial perspective — a blend from a fog colour of your choosing to the pure sky, matching the control name you already know from Godot’s Environment.
How the sky resolves with distance — near geometry picks up a soft, hazy version of the sky, far geometry picks up a sharp one. That gradient is what makes distance read as air rather than as a filter.
Sky brightness and sky rotation, to line the fog up with your scene.
Quality, traded against cost.

A debug view puts depth, distance, fog amount and sampled sky colour on screen while you tune.

Fog reads a snapshot of your sky. It refreshes automatically when you change skies, but a sky that animates in place needs a manual refresh — one button, or one call from a script.

Sky projections

Three sky shaders, driven from a single panorama with an exposure control. They exist because a panorama mapped at infinity is wrong the moment your camera can move relative to it.


Dome	Puts the sky on a dome of a size and position you set, sitting on your ground plane. The sky has a place, so it parallaxes correctly as the camera moves through the world.
Room	Puts it on a box. Interior light and reflections through windows without capturing a cubemap.
Half	An upper-hemisphere panorama, with the lower half progressively softened so it reads as haze instead of looking like the sky is transparent below the horizon.

These are deliberately minimal — projection helpers, not an atmospheric model. If you want physically simulated sky, use Godot’s and point Fog at it. They work together.